<template>
    <el-container class="home-container">
        <!-- 头 -->
  <el-header>
    <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button>
</el-header>
<!-- 主体 -->
  <el-container>
    <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单 -->
        <el-menu background-color="#333744" text-color="#fff"
         active-text-color="#409eff" :unique-opened="true" :collapse="isCollapse" 
         :collapse-transition="false" router
         :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
        <!-- 一级菜单模板区域 -->
        <template slot="title">
            <!-- 图标 -->
          <i :class="iconObjs[item.id]"></i>
          <!-- 文本 -->
          <span>{{ item.authName }}</span>
        </template>
       <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" 
        :key="subItem.id" @click="saveNavState('/'+subItem.path)">
            <template slot="title"> 
            <!-- 图标 -->
          <i class="el-icon-location"></i>
          <!-- 文本 -->
          <span>{{ subItem.authName }}</span>
        </template>
        </el-menu-item>
      </el-submenu>
     
    </el-menu>
    </el-aside>
    <el-main>
        <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>
<script>
export default{ 
    data(){
        return { 
            menulist:[],
            iconObjs:{
                '125':'iconfont icon-users',
                '103':'iconfont icon-tijikongjian',
                '101':'iconfont icon-shangpin',
                '102':'iconfont icon-danju',
                '145':'iconfont icon-baobiao'
            },
            isCollapse:false,
            // 被激活的动态地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods:{
        logout(){
            window.sessionStorage.clear()
            this.$router.push('/login')
        },

        async getMenuList(){
            const {data:res} =await this.$http.get('menus')
            if(res.meta.status!==200)return this.$message.error(res.meta.msg)
            this.menulist=res.data
            console.log(res);
        },
        // 点击收起侧边栏
        toggleCollapse(){
            this.isCollapse=!this.isCollapse
        },
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
        }
        
    }
}
</script>
<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items:center ;
    // button{
    //     margin: 5px 10px;
    // }
    color: #fff;
    font-size: 20px;
    div{
        display: flex;
        align-items: center;
        span{
            margin-left:15px ;
        }
    }
}
.el-aside{
    background-color: #333744;
}
.el-menu{
    border-right: none;
}
.el-main{
    background-color: #e9edf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4a5064;
    color: #fff;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    letter-spacing: 0.2em;
    cursor:pointer
}
</style>